OK I WENT OUT AND GOT A CODE READER ,IT TELLING ME (B1233)ITS RT FRONT WHEEL SPEED SENSOR IS LOCATED AT FRONT WHEEL.I PULLED MY WHEEL OFF AND THE PLUG WIRE IS RIGHT BEHIND THE ROTOR. BUT FOR SOME REASON THEIRS NOTHING THEIR TO PLUG INTO,THE SENSOR IS MISSING.P.S. I JUST BROUGHT THIS FROM AN AUCTION.
Are you sure it's a speed sensor? Sounds like a location of a abs sensor? Maybe someone replaced hub/bearing assembly (which usually includes abs sensor) with wrong one that should have had abs sensor attached. You may also be able to replace only sensor. I'm not a mechanic- i'm a parts guy but never seen a speed sensor at wheel. Sometimes with some trucks on differential but not wheel ??